I did, I did.... I ended up getting the slowest times however, solely for the fact that I was babying the car. Only ended up with 2 more paint chips, and $11 for a car wash at 45c per minute.
It was great fun to participate and watch! Big open track with pylons, so you don't have to worry about hitting anything. On one end is a dirt road which you just jammed the accelerator, and the rest is all driving around corners and between pylons.